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    MasterEmaco N 423RS: Fast-setting concrete-repair mortar for horizontal, vertical and overhead use

    Formerly: Emaco FS

    How does MasterEmaco N 423RS work?

    MasterEmaco N 423RS is a fast-setting, polymer-modified, cementitious repair mortar for horizontal, vertical or overhead surfaces.

    Recommended uses:

    • Interior and exterior
    • Vertical and overhead
    • Horizontal
    • Above and below grade
    • Spalls or holes in concrete
    • Deteriorated edges

    What are the unique features of MasterEmaco N 423RS?

    • Non-sag consistency able to be placed in 1" (25 mm) thick lifts
    • Fast-setting
    • Only requires the addition of potable water

    What are the benefits of MasterEmaco N 423RS?

    • Polymer modification improves adhesion and provides increased freeze/thaw stability
    • Can be mixed with MasterEmaco A 400 to increase high-performance properties

    On the Job Videos

    US / Canada Product Information

    Data Guide

    Data Guide (French)


    Certification Letter

    LEED Letter

    Direct contact

    Master Builders Solutions Technical Support

    Construction Systems

    1-800-243-6739

    Safety Data Sheet (SDS)

    Find all available safety data sheets for this product.

    Product Certifications

    Generate a free certificate of conformance for a specific Master Builders Solutions construction product.

    Related Literature

    Certification Letter

    pdf (89.98 Kb)

    Data Guide

    pdf (274.82 Kb)

    Data Guide (French)

    pdf (132.50 Kb)

    LEED Letter

    pdf (92.94 Kb)

    MasterEmaco N 423RS SDS

    pdf (257.67 Kb)

    MasterEmaco N 423RS SDS

    pdf (316.26 Kb)